JP4955625B2 - Driving advice providing device, driving diagnosis device - Google Patents

Driving advice providing device, driving diagnosis device Download PDF

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JP4955625B2
JP4955625B2 JP2008200004A JP2008200004A JP4955625B2 JP 4955625 B2 JP4955625 B2 JP 4955625B2 JP 2008200004 A JP2008200004 A JP 2008200004A JP 2008200004 A JP2008200004 A JP 2008200004A JP 4955625 B2 JP4955625 B2 JP 4955625B2
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driving
advice
vehicle
diagnosis
state
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JP2010038646A (en
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功佑 山岡
庸貴 田内
彰次郎 竹内
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トヨタ自動車株式会社
株式会社デンソー
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/0098Details of control systems ensuring comfort, safety or stability not otherwise provided for

Description

  The present invention relates to a driving advice providing device that diagnoses a driving state of a vehicle and provides a driver with advice based on a diagnosis result, and a driving diagnosis device that diagnoses the driving state of the vehicle.

  In recent years, environmental problems such as environmental pollution and global warming have become more and more serious. For example, in vehicles (automobiles), reduction of exhaust gas including carbon dioxide has become a major issue.

In addition, in the case of vehicles, safety issues are becoming increasingly greater against the background of increasing traffic accidents.
In this regard, conventionally, in order to improve the performance related to the environment (for example, fuel consumption: fuel consumption rate) and the performance related to safety, for example, the intelligent and advanced functions of the vehicle have been promoted, and certain effects have been achieved.

  On the other hand, when individual drivers try to drive economically and safely, it can be expected to improve fuel consumption (and thus reduce exhaust emissions) and reduce traffic accidents. For this reason, improving the driving skills of individual drivers is an important theme. Thus, for example, various techniques for diagnosing the driving state of the driver have been proposed.

For example, Patent Document 1 discloses a device that detects a driving state of a vehicle, compares a detected value with a reference value, diagnoses / evaluates the driving state for a plurality of items, and notifies the driver of the result (advice). Is described.
JP 2000-247162 A

By the way, in the diagnosis of the driving state, there are some items that are difficult to quantitatively evaluate (absolute evaluation) by comparison with a reference value.
As an example, considering the fuel consumption, for example, it cannot be generally said that the fuel consumption is good (the driving state is good) just because the fuel consumption in a certain section is smaller than the reference value. For example, while driving on an expressway generally improves fuel efficiency, if the driving method is inappropriate, such as depressing the accelerator too much, the fuel efficiency becomes relatively poor. In such a case, even if the fuel efficiency is better than a predetermined standard, a negative diagnosis should be made if it is relatively bad.

  The present invention has been made in view of these problems, and an object of the present invention is to improve the accuracy of diagnosis in a driving advice providing apparatus that diagnoses the quality of a driving state of a vehicle and provides advice based on the diagnosis result.

  The invention according to claim 1 made to achieve the above object is based on vehicle information acquisition means for acquiring vehicle information that is information representing the state of the vehicle, and vehicle information acquired by the vehicle information acquisition means. Diagnosis means for diagnosing the quality of the driving state of the vehicle, advice generation means for generating advice to be provided to the driver based on the diagnosis result of the diagnosis means, and advice generated by the advice generation means are notified to the driver In the driving advice providing device, the diagnostic means calculates the driving state of the vehicle in the travel section for each predetermined travel section, and the travel section to be diagnosed (hereinafter referred to as the target travel section). Comparing the driving state calculated for the driving state with the driving state calculated for other travel sections, so as to diagnose the quality of the driving state in the target travel section You have me.

  That is, if the driving state in the target traveling section is worse than the driving state in the other traveling section, it can be diagnosed that the driving state in the target traveling section is bad. On the contrary, if the driving state in the target traveling section is good compared with the driving state in other traveling sections, the driving state in the target traveling section can be diagnosed as good.

  That is, if the driving state in the target travel section is relatively bad, the diagnosis result is bad. If the driving state in the target travel section is relatively good, the diagnosis result is good.

As described above, in the present invention, since the relative evaluation is performed, the diagnosis result about pass / fail is accurate within the range of the comparison targets.
Next, the driving advice generation device according to claim 2 is the driving advice device according to claim 1, wherein the advice generation means is configured such that the driving state in the target travel section (hereinafter referred to as the target driving state) is more than the target travel section. When the diagnosis means diagnoses that the driving condition has deteriorated compared to the driving condition in the past travel section (hereinafter referred to as the comparative driving condition), the target driving condition is the comparative driving condition. Even when the diagnosis means diagnoses that the condition has deteriorated compared to the above, no advice is generated when the diagnosis means diagnoses that the target operating state is better than a predetermined reference state.

  That is, basically, advice is generated if the target operating state is worse than the comparative operating state. In this case, it is expected that the driver will pay attention to the driving state by providing the advice, and the driving state is improved, which is effective.

  On the other hand, as an exception, even if the target driving state is worse than the comparative driving state, if the target driving state is better than the predetermined reference state, no advice is generated. For example, as long as the driver performs the driving at the first point, it is possible to prevent the advice from being generated even if the driving state is relatively deteriorated. According to this, the processing load of advice generation can be suppressed. Further, in some cases, it is possible to prevent the driver from being offended by providing advice even though the driver is driving the first point.

  Next, the driving advice providing apparatus according to claim 3 is the driving advice providing apparatus according to claims 1 and 2, wherein the diagnosis means diagnoses the quality of a plurality of items related to the driving state, and the advice generation means includes In addition, for each of a plurality of items, advice is generated based on the diagnosis result of the item, while for the same item, it is diagnosed by the diagnostic means that the quality is not good continuously for a plurality of running sections. In such a case, no advice is generated for a predetermined period for the item.

  According to this, it is possible to avoid that advice is continuously generated for the same item, that is, for example, similar advice is continuously provided to the driver. For example, according to the present invention (invention of claim 3), in a situation where the driver dares to drive economically for some reason, the advice that encourages economical driving continues to be generated. , Can be avoided.

  Next, the driving advice providing apparatus according to claim 4 is the driving advice providing apparatus according to claim 3, wherein each of the plurality of items is weighted, and whether the driving state in the target travel section is good or bad is determined for each of the plurality of items. Diagnosis is based on the result of multiplying the diagnosis result by the weight for each item.

  For example, it is conceivable that there are items that should be emphasized more and items that do not need to be emphasized so much in the diagnosis of the quality of driving conditions in a predetermined travel section (overall diagnosis of pass / fail). According to the fourth aspect of the present invention, for example, the diagnosis result of an item to be emphasized can have a large influence on the comprehensive diagnosis of the quality of the driving state. The diagnosis result of the items that do not need to be affected can be reduced in the overall diagnosis of the quality of the driving state. For this reason, it is possible to improve the accuracy of the diagnosis of the quality of the driving state.

  Next, the driving advice providing device according to claim 5 is the driving advice providing device according to claim 4, wherein the advice notifying means notifies the advice generated for each of the plurality of items in descending order of weighting of the items. It is characterized by that.

  According to this, it is possible to provide the driver with advice on items to be emphasized more preferentially. For this reason, provision of advice becomes more effective.

Next, the driving advice providing apparatus according to claim 6 is the driving advice providing apparatus according to claims 1 to 5, wherein the advice notification means notifies the advice when the vehicle stops.
According to this, the driver can concentrate on driving while the vehicle is traveling, and is safer.

  In such a driving advice providing apparatus according to claim 6, in particular, as in claim 7, the advice generation means may generate the advice when the vehicle stops. Since the advice is notified to the stop by the notifying means, it is sufficient that the advice is generated at the time of the stop. By doing so, the processing load for generating the advice can be suppressed.

  Next, the invention according to claim 8 diagnoses the quality of the driving state of the vehicle based on vehicle information acquisition means for acquiring vehicle information which is information representing the state of the vehicle, and vehicle information acquired by the vehicle information acquisition means. In the driving diagnostic apparatus, the diagnostic means calculates the driving state of the vehicle in the traveling section for each predetermined traveling section, and about the traveling section to be diagnosed (hereinafter referred to as the target traveling section) The operation state calculated is compared with the operation states calculated for other travel sections, and the quality of the drive state in the target travel section is diagnosed.

  According to this, the same effect as described in claim 1 can be obtained.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a configuration diagram of a driving diagnosis system 1 including a driving advice providing device 10 according to the present invention.

  The driving advice providing device 10 is connected to the in-vehicle LAN 200. Further, for example, a wide area communication device 210, a vehicle speed pulse generator 220, an acceleration sensor 230, and a fuel amount detection sensor 240 are connected to the in-vehicle LAN 200. The sensors are examples, and various sensors for detecting the state of the vehicle are connected to the in-vehicle LAN 200.

  The wide-area communication device 210 receives traffic information (for example, an accident) from the VICS center via a radio wave beacon or an optical beacon for VICS (registered trademark: Vehicle Information and Communication System) service arranged near the road, for example. Information, traffic jam information, etc.) and vehicle information, user information, etc. can be transmitted to the VICS center.

The vehicle speed pulse generator 220 is a device that generates a pulse signal corresponding to the vehicle speed.
The acceleration sensor 230 is a sensor that outputs a signal corresponding to the acceleration of the vehicle.
The fuel amount detection sensor 240 is a sensor that outputs a signal corresponding to the amount of fuel in the fuel tank.

FIG. 2 is a block diagram illustrating a specific configuration of the driving advice providing apparatus 10.
The driving advice providing device 10 includes a position detector 101, a map database 106, an operation switch group 107, an external memory 108, a display device 109, a voice guidance / voice recognition device 110, a Bluetooth communication device (hereinafter referred to as a BT communication device). 111, a remote control sensor 112, a vehicle interface (hereinafter referred to as I / F) 113, and a control circuit 115 that performs overall control thereof.

  The position detector 101 is a sensor group for detecting the current position and direction (traveling direction) of a vehicle on which the driving advice providing device 10 is mounted, and includes a geomagnetic sensor 102, a gyroscope 103, a distance sensor 104, and GPS reception. Machine 105 is provided.

  The GPS receiver 105 receives a transmission radio wave from a GPS (Global Positioning System) artificial satellite via the GPS antenna 105a, and detects the position, direction (traveling direction), speed, and the like of the vehicle.

The geomagnetic sensor 102 is a azimuth sensor using a semiconductor, and detects the north-south geomagnetism generated on the earth to detect the azimuth (traveling direction).
The gyroscope 103 is a sensor for detecting the angular velocity (direction change amount) of the vehicle, and outputs a detection signal corresponding to the angular velocity of the rotational motion applied to the vehicle.

The distance sensor 104 detects the distance traveled from the longitudinal acceleration of the vehicle or the like.
Since each of these sensor groups has an error having a different property, each sensor group is configured to be used while being complemented by a plurality of sensors.

  The map database 106 stores map data. As map data, link data representing roads, node data representing intersections, so-called map matching data for improving the accuracy of location, mark data indicating facilities, image data for display, voice guidance There are audio data.

  The operation switch group 107 is an input operation panel that is configured integrally with the display device 109 and includes a touch panel set on the display screen and mechanical button switches arranged around the display device 109. The touch panel and the display device 109 are integrated by a laminated structure, and there are various types of touch panels such as a pressure-sensitive method, an electromagnetic induction method, a capacitance method, or a combination of these.

The external memory 108 stores various programs executed by the control circuit 115, calculation results in the control circuit 115, and the like.
The display device 109 is a liquid crystal color display that displays on the screen a diagnosis result regarding a driving state, a map, a searched road, a TV, a DVD image, etc., in addition to buttons when functioning as a touch panel integrally with the operation switch group 107. It is.

  The voice guidance / voice recognition device 110 outputs voice of route guidance to realize voice guidance, or converts voice uttered by a user to a microphone (not shown) into an electric signal, and stores it in a recognition dictionary stored inside. The lexical data (comparison target pattern) is compared, and the one with the highest degree of coincidence is sent to the control circuit 115 as a recognition result.

The BT communication device 111 is a device for communicating with peripheral devices wirelessly (Bluetooth).
The remote control sensor 112 receives a radio signal such as an infrared ray or a radio wave from the remote control 120 operated by the user, and inputs the reception result to the control circuit 115. The user can perform the same operation as the operation on the operation switch group 107 from a remote position by operating the remote controller 120.

  The vehicle I / F 113 receives signals from various sensors (for example, the vehicle speed pulse generator 220, the acceleration sensor 230, the fuel amount detection sensor 240, etc. in FIG. 1) and inputs them to the control circuit 115. In addition, although not shown, for example, an accelerator sensor, a throttle opening sensor, a brake sensor, a steering angle sensor, an inter-vehicle distance sensor, an image sensor, an indicator sensor, an illuminance sensor, and the like are mounted on the vehicle.

The control circuit 115 includes a driving diagnosis information generation unit 151, a diagnosis information comparison unit 153, and an advice generation unit 155.
The driving diagnosis information generation unit 151 receives, for example, signals from the vehicle speed pulse generator 220, the acceleration sensor 230, the fuel amount detection sensor 240, and the like (in other words, acquires the vehicle state) via the vehicle I / F 113, and drives. Diagnose the condition. Then, diagnostic information (diagnosis result) is generated. The time when the vehicle state is acquired is calculated based on time data included in the radio wave transmitted from the GPS. In the present embodiment, the driving state is diagnosed with a predetermined traveling section as one unit. This point will be described later.

  The diagnosis information comparison unit 153 has a function of comparing diagnosis results for each travel section. Specifically, the diagnosis result of the previous travel section and the diagnosis result of the current travel section are compared.

  The advice generation unit 155 generates advice to be provided to the driver based on the diagnosis information generated by the driving diagnosis information generation unit 151 or the comparison result by the diagnosis information comparison unit 153.

FIG. 3 is a time chart showing the diagnosis timing of the driving state and the advice generation timing.
In FIG. 3, the first level represents the on / off state of the accessory switch (ACC) of the vehicle.

  The second level represents an example of the running / stopped state of the vehicle, and each of the sections (1) to (6) represents a section where the vehicle is running (section where the vehicle speed is greater than 0 km / h). The section represents a section where the vehicle is stopped (vehicle speed is 0 km / h). In addition, the numerical value of km display attached | subjected for every area represents travel distance.

The third level represents the diagnosis timing of the driving state.
In the present embodiment, the diagnosis is performed with a predetermined interval as one unit. Specifically, starting from a point where the cumulative travel distance of the vehicle is 0, the first stop time after the cumulative travel distance of the vehicle is 1.6 km or more is the end point, and the unit from the start point to the end point is 1 unit. Become. Hereinafter, this one-unit section is also referred to as an evaluation section. In addition, 1.6 km is an average travel distance (statistically known) when the vehicle is driven with a so-called “slightly riding” feeling (feeling that a little).

  In the example of FIG. 3, after the accessory switch is turned on, the point at which the vehicle first started running (the start point of the section (1)) becomes the start point of the evaluation section. At the end point of section (1), the cumulative travel distance is 0.8 km and does not satisfy the condition that it is 1.6 km or more, so it is not the end point of the evaluation section. Similarly, the end point of section (2) is also Since it does not satisfy the condition that the cumulative travel distance is 1.5 km and is 1.6 km or more, it does not become the end point of the evaluation section. The end point of section (3) satisfies the condition that the cumulative travel distance is 2.2 km and is 1.6 km or more (in other words, the end point of section (3) is that the cumulative travel distance is 1.6 km or more) Since this is the first stop position after becoming), it becomes the end point of the evaluation section. That is, the start point of the section (1) to the end point of the section (3) is the first evaluation section (hereinafter referred to as the first evaluation section). Diagnosis is performed for the first evaluation interval. The diagnosis timing is the end point of the first evaluation interval (that is, the end point of the interval (3)). Hereinafter, this diagnosis timing is also referred to as diagnosis time A.

  The next evaluation section (hereinafter referred to as a second evaluation section) is from the end point of section (3) to the end point of section (5). The diagnosis timing for the second evaluation interval is the end point of the second evaluation interval (that is, the end point of the interval (5)). Hereinafter, this diagnosis timing is also referred to as diagnosis time B.

  The fourth level represents advice generation timing (execution timing of advice generation processing). Here, the diagnosis result in the previous evaluation section and the diagnosis result in the current evaluation section are compared, the present diagnosis result is relatively evaluated, and advice based on the evaluation result is generated. This will be described later with reference to FIG. For this reason, no advice is generated at the end point of the first evaluation section because there is no diagnosis result of the previous evaluation section (the previous evaluation section does not exist). On the other hand, at the end point of the second evaluation interval, the diagnosis result of the first evaluation interval and the diagnosis result of the second evaluation interval are compared, and the diagnosis result of the second evaluation interval is relatively evaluated to generate advice. Is done.

Next, FIG. 4 is a diagram showing the contents of diagnosis.
In the present embodiment, as shown in FIG. 4, an eco switch (hereinafter referred to as “eco SW”) use travel distance ratio, an eco lamp lighting travel distance ratio, an inappropriate gear selection travel distance ratio, a specific mode selection travel distance ratio, and At least a diagnosis is made about the travel distance ratio that the accelerator is depressed too much.

  The eco SW is a switch for switching the vehicle travel mode to the low fuel consumption mode. In the low fuel consumption mode, for example, the operating state of the air conditioner is suppressed from the normal time, or the rate of increase of the fuel injection amount with respect to the accelerator depression amount is suppressed from the normal time, thereby reducing the fuel consumption. Further, the eco lamp is a lamp that is turned on when the traveling state of the vehicle is an economical state (for example, a state in which fuel consumption is suppressed).

Hereinafter, each diagnosis item will be described more specifically. In the following description, the cumulative total is the cumulative total since the accessory switch was turned on. Further, (n) represents a value at the time of the current diagnosis, and (n-1) represents a value at the time of the previous diagnosis.
<Eco SW use mileage ratio>
This is the ratio of the distance traveled by the vehicle in a state where the eco-SW is effective in a predetermined travel section (travel distance).

The calculation formula is as follows.
(Eco SW use travel distance total (n) -Eco SW use travel distance total (n-1)) / (travel distance total (n) -travel distance total (n-1)) ... Formula (A)
The cumulative travel distance using the eco switch is the cumulative distance traveled by the vehicle while the eco switch is used (pressed).

  The calculation formula (A) will be described by applying to the example of FIG. In the example of FIG. 3, since the previous evaluation interval does not exist at the time of diagnosis A (in this case, the value for the previous evaluation interval is treated as 0), the diagnosis time B will be described.

  The numerator of the calculation formula (A) is the state in which the eco SW is used (pressed) at the time of diagnosis A from the total distance traveled by the vehicle in the state where the eco SW is used (pressed) at the time of diagnosis B. Is calculated by subtracting the total distance traveled by the vehicle. That is, the distance in the second evaluation section is calculated out of the distance traveled by the vehicle while the eco switch is used (pressed).

The denominator of the calculation formula (A) is calculated by subtracting the total travel distance at diagnosis A from the total travel distance at diagnosis B. That is, in this case, 2.8 km, which is the travel distance of the second evaluation section, is calculated.
<Eco lamp lighting mileage ratio>
This is the ratio of the distance traveled by the vehicle in a state where the eco lamp is lit in a predetermined travel section (travel distance).

The calculation formula is as follows.
(Eco lamp lighting mileage accumulation (n) -Eco lamp lighting mileage accumulation (n-1)) / (Eco lamp diagnosis mileage accumulation (n) -Eco lamp diagnosis mileage accumulation (n-1)). )
The cumulative running distance of the eco lamp is the cumulative distance traveled by the vehicle while the eco lamp is on.

The accumulated eco lamp diagnosis travel distance is the total distance traveled by the vehicle in a state where it can be diagnosed whether or not the eco lamp is turned on.
In the example of FIG. 3, the numerator of the calculation formula (b) indicates that the vehicle travels in the state where the eco lamp is lit at the time of diagnosis A from the total distance traveled while the eco lamp is lit at the time of diagnosis B. It is calculated by subtracting the accumulated distance. That is, the distance in the second evaluation section is calculated from the distance traveled by the vehicle with the eco lamp turned on.

The denominator of the above calculation formula (b) indicates whether or not to turn on the eco lamp at the time of diagnosis A from the total distance traveled by the vehicle in a state where it can be diagnosed whether or not the eco lamp is turned on at the time of diagnosis B. It is calculated by subtracting the total distance traveled by the vehicle in a diagnoseable state. That is, the distance in the second evaluation section is calculated out of the distance traveled by the vehicle in a state where it can be diagnosed whether or not the eco lamp is turned on.
<Inappropriate gear selection mileage ratio>
This is the ratio of the distance traveled by the vehicle in a state where a gear (shift) that does not match the torque characteristics of the engine is selected in a predetermined travel section (travel distance).

The calculation formula is as follows.
(Inappropriate gear selection travel distance cumulative (n) -Inappropriate gear selection travel distance total (n-1)) / (Total travel distance (n) -Total travel distance (n-1)) )
The improper gear selection travel distance cumulative is the total distance traveled by the vehicle in a state where the gear (shift) selection does not match the torque characteristics of the engine.

  In the example of FIG. 3, the numerator of the calculation formula (c) indicates that the gear (shift) at the time of diagnosis A is calculated from the total distance traveled by the vehicle in an inappropriate state of gear (shift) selection at the time of diagnosis B. ) Is subtracted from the cumulative distance traveled by the vehicle. That is, the distance in the second evaluation section is calculated from the distance traveled by the vehicle in an inappropriate gear (shift) selection.

The denominator of the calculation formula (C) is as already described in the calculation formula (A).
<Specific mode selection mileage ratio>
It is the ratio of the distance traveled by the vehicle in a state where the travel mode is set to a specific mode (sport mode or power mode) in a predetermined travel section (travel distance). The sport mode / power mode is a mode in which traveling performance is emphasized, and is a mode in which, for example, the response of an accelerator operation or a brake operation is improved or acceleration performance is improved.

The calculation formula is as follows.
(Specific mode selection travel distance cumulative (n) -specific mode selection travel distance cumulative (n-1)) / (travel distance cumulative (n) -travel distance cumulative (n-1)) ... Formula (2)
The specific mode selection travel distance cumulative is the total distance traveled by the vehicle in a state where the vehicle mode is selected in the eco mode, which is an economical mode.

  In the example of FIG. 3, the numerator of the calculation formula (2) is a state in which the eco mode is selected at the time of diagnosis A from the total distance traveled by the vehicle in the state where the eco mode is selected at the time of diagnosis B. Is calculated by subtracting the total distance traveled by the vehicle. That is, the distance in the second evaluation section is calculated from the distance traveled by the vehicle with the eco mode selected.

The denominator of the calculation formula (2) is as already described in the calculation formula (A).
<Percentage of distance traveled by excessive acceleration>
It is the ratio of the distance that the vehicle has traveled in a state where the amount of depression of the accelerator is equal to or greater than a certain threshold in a predetermined travel section (travel distance). Here, the threshold value is different depending on the vehicle speed. Table information representing the relationship between the vehicle speed and the threshold value is stored in advance in the external memory 108, for example. FIG. 5 shows an example of the table information. As shown in the example of FIG. 5, the threshold value of the accelerator opening (%) is set in accordance with each of vehicle speeds 0 km / h, 5 km / h, 10 kn / h, 20 km / h... 110 km / h. . For example, it is set for each engine type and transmission type.

Next, the calculation formula of this item is as follows.
(Accelerator excessive travel distance cumulative (n) −accelerator excessive travel distance cumulative (n−1)) / (travel distance cumulative (n) −travel distance cumulative (n−1))... (E)
The cumulative travel distance of the accelerator pedal is the cumulative distance traveled by the vehicle in a state where the accelerator depression amount is equal to or greater than a certain threshold value.

  In the example of FIG. 3, the numerator of the calculation formula (e) indicates that the accelerator depression amount at the time of diagnosis A is calculated from the total distance traveled by the vehicle when the accelerator depression amount is equal to or greater than a threshold value at the time of diagnosis B. It is calculated by subtracting the total distance traveled by the vehicle in a state of a certain threshold value or more. That is, the distance in the second evaluation section is calculated out of the distance traveled by the vehicle in a state where the accelerator depression amount is greater than or equal to a certain threshold value.

The denominator of the calculation formula (e) is as already described in the calculation formula (A).
Next, FIG. 6 is a flowchart showing advice generation processing executed in the control circuit 115.

The advice generation process of FIG. 6 is executed at the advice generation timing described with reference to FIG.
In the process of FIG. 6, first, in S110, the timing (advice generation timing) corresponding to the number of times since the accessory switch (ACC) of the vehicle is turned on (in other words, the current process is performed when the ACC is turned on). And the number of times corresponding to the processing is calculated), and it is determined whether or not the remainder when the current Tth time is divided by 5 (T / 5) is 1.

If it is determined in S110 that the remainder when T is divided by 5 is not 1 (S110: NO), the process proceeds to S140.
On the other hand, if it is determined in S110 that the remainder when T is divided by 5 is 1 (S110: YES), the process proceeds to S120.

  That is, according to this, the process of S120 (or the process of S130 after S120) is executed once in 5 times of the number of advice generations. This is intended to prevent frequent execution of S120 (or the processing of S130) even if the driver intentionally turns off the eco switch, for example. As will be described later, depending on the determination result in S120 (or S130), a warning advice is generated, so that it is possible to prevent the warning advice from being generated continuously.

In S120, it is determined whether or not the eco SW use travel distance ratio in the current evaluation section is 0. If it is determined that it is 0 (S120: YES), the process proceeds to S190.
In S190, a warning is given that the eco SW remains off. Specifically, advice indicating that the eco SW remains off is generated and displayed on the display screen of the display device 109. Note that the voice guidance / speech recognition device 110 may be audibly alerted. After S190, the process proceeds to S260.

If it is determined in S120 that the eco-SW use travel distance ratio in the current evaluation section is not 0 (S120: NO), the process proceeds to S130.
In S130, it is determined whether or not the eco SW use travel distance ratio in the current evaluation section is less than 0.8. If it is determined that the eco SW use travel distance ratio is less than 0.8 (S130: YES), it is determined that the eco SW use ratio is low. And it transfers to S200.

  In S200, a warning is given that the usage rate of the eco SW is low. Specifically, advice for noting that the eco SW usage rate is low is generated and displayed on the front screen of the display device 109. After S200, the process proceeds to S260.

If it is determined in S130 that the eco-SW use travel distance ratio in the current evaluation section is not less than 0.8 (S130: NO), the process proceeds to S140.
In S140, the absolute value of the value obtained by subtracting the eco-SW use travel distance ratio as the previous diagnosis result from the eco-SW use travel distance ratio as the current diagnosis result (hereinafter referred to as the eco-SW diagnosis value) is the current value. It is determined whether or not an absolute value (hereinafter referred to as an eco lamp diagnosis value) of a value obtained by subtracting an eco lamp lighting travel distance ratio as a previous diagnosis result from an eco lamp lighting travel distance ratio as a diagnosis result, and an eco SW diagnosis value Is determined to be equal to or greater than the eco lamp diagnosis value (S140: YES), the process proceeds to S170.

  In S170, it is determined whether or not the value obtained by subtracting the eco-SW use travel distance ratio as the previous diagnosis result from the eco-SW use travel distance ratio as the current diagnosis result is greater than 0. (S170: YES), the process proceeds to S210.

In S210, an advice to give up that the driving state is economical is generated and displayed on the front screen of the display device 109. After S210, the process proceeds to S260.
If a negative determination is made in S170 (S170: NO), the process proceeds to S180.

  In S180, it is determined whether or not the eco-SW use travel distance ratio as the current diagnosis result is greater than 0.8. If it is determined that the eco-SW use travel distance ratio is not 0.8 or more (S180: NO), the eco-SW use ratio is low. Determination is made and the process proceeds to S220.

In S <b> 220, advice for noting that the eco SW usage rate is low is generated and displayed on the display screen of the display device 109. After S220, the process proceeds to S260.
If it is determined in S180 that the eco-SW use travel distance ratio as the current diagnosis result is greater than 0.8 (S180: YES), the process proceeds to S150.

If it is determined in S140 that the eco-SW diagnosis value is not equal to or greater than the eco-lamp diagnosis value (S140: NO), the process proceeds to S150.
In S150, it is determined whether or not the value obtained by subtracting the eco lamp lighting travel distance ratio as the previous diagnosis result from the eco lamp lighting travel distance ratio as the current diagnosis result is greater than 0, and if it is determined to be greater than 0 (S150: YES), the process proceeds to S230.

In S230, an advice to give up that the lighting time of the eco lamp has become longer is generated and displayed on the display screen of the display device 109. After S230, the process proceeds to S260.
On the other hand, if a negative determination is made in S150, the process proceeds to S160, where it is determined whether or not the eco lamp lighting travel distance ratio as the current diagnosis result is greater than 0.8, and if it is determined that it is greater than 0.8 (S160: YES) ), The process proceeds to S240. In S240, setting is made so that advice is not generated, and then the process proceeds to S260.

  On the other hand, if a negative determination is made in S160 (S160: NO), the process proceeds to S250, where an advice to alert the user of excessive depression of the accelerator is generated and displayed on the display screen of the display device 109. Thereafter, the process proceeds to S260.

In S260, it is determined whether the vehicle has stopped. If it is determined that the vehicle has stopped (S260: YES), the process proceeds to S110.
On the other hand, if it determines with having not stopped in S260 (S260: NO), it will transfer to S270.

In S270, it is determined whether or not the accessory switch is turned off. If it is determined that the accessory switch is not turned off (S270: NO), the process returns to S110.
On the other hand, if it determines with the accessory switch having been turned off in S270 (S270: YES), the said process will be complete | finished as it is.

Here, FIG. 7 is an example of a display screen that displays the diagnosis result of the driving state.
Although details will be described later, at least user information, eco level, fuel consumption information, and advice are displayed on the screen shown in FIG.

  The user information is information representing a logged-in user. When the user is not logged in (no user is specified), a message indicating that the user is a GUEST DRIVER (that is, a temporary guest user) is displayed as in the example of FIG.

  The eco level indicates the degree of economic efficiency of driving. For example, diagnosis results such as fuel consumption, eco-SW use travel distance ratio, eco lamp lighting travel distance ratio, inappropriate gear selection travel distance ratio, specific mode selection travel distance ratio, accelerator depressing travel distance ratio, etc. are comprehensively evaluated, Leveled. Also, the evaluation section (period) can be set to one minute, or a trip period (for example, a period from when the accessory switch is turned on to off), or can be arbitrarily set by the driver.

In the fuel consumption information, the fuel consumption at a predetermined time is displayed.
Next, the advice generated in the process of FIG. 6 (specifically, S190 to S230, S250) is displayed in the advice column.

  As described above, in the present embodiment, the diagnosis result for the current evaluation interval is evaluated by comparing the diagnosis result for the current evaluation interval with the diagnosis result for the previous evaluation interval. Yes. For this reason, for example, it is possible to provide the driver with evaluation and advice on items that are difficult to quantitatively evaluate (in other words, absolute evaluation). For this reason, it can contribute to the improvement of the driving skill of the driver.

  Moreover, in the said embodiment, even when the diagnostic result in this evaluation area has become worse than the diagnostic result in the last evaluation area (a driving | operation state deteriorated) (S150: NO or S170: NO), If the current diagnosis result is better than a predetermined standard (S160: YES or S180: YES), advice that warns that the driving state has deteriorated compared to the previous time is not generated (S240). ), The processing load of advice generation can be reduced. In some cases, it is possible to prevent the driver from feeling offended.

  In the above embodiment, advice is generated for each of a plurality of items related to the driving state (see FIG. 4) (S190 to S230, S250), so more specific advice is provided to the driver. Will come to be.

Further, in the above embodiment, the provision of advice is performed when the vehicle is stopped, so that the driver can concentrate on driving while the vehicle is traveling.
By the way, in this embodiment, you may comprise like the following modifications.
<Modification>
A modification will be described with reference to FIG.

FIG. 8 is a time chart showing an aspect of providing advice.
The first row represents an example of the slow / stop state of the vehicle after the vehicle has stopped temporarily. Sections (7) to (9) represent slow sections (the vehicle speed is less than 4 km / h), and other sections represent stop sections.

  The second row represents advice generation timing. The timing indicated by the symbol C is the advice generation timing. In the present modification, advice is generated when the vehicle starts moving (when driving slowly) after stopping.

The third row represents the timing for providing advice. Advice is provided when the vehicle starts to move when the vehicle is stopped or traveling slowly.
Here, in this example, the same advice is provided twice.

The method of counting twice is as follows.
First, advice is provided when the vehicle starts to move. Thereafter, when the vehicle speed is higher than 0 km / h and lower than or equal to 4 km / h continues for 5 seconds or more, the number of times of provision is counted as one time for the first time.

  For example, in the example of FIG. 8, advice is provided at the timing indicated by the symbol D (start point of section (7)), but the duration of section (7) is 2 s (<5 s). Not counted in the number of times.

  Next, advice is provided at the timing indicated by the symbol E (start point of the section (8)), and the duration of the section (8) is 6 s (≧ 5 s), so the advice provision is counted in the number of times. That is, the provision of advice at the timing of the code E is treated as the first time. Similarly, the provision of advice at the timing of the code F is handled as the second time.

According to this, it is possible to prevent the driver from overlooking the advice by providing the same advice at least twice.
On the other hand, if the duration of the stop is less than 5 s, advice is not counted in the number of stops. For example, when driving / stopping is repeated such as in traffic jams, advice can be provided for very short stops. It is possible to prevent the number of times from being counted. That is, it is possible to prevent the provision of advice from becoming insufficient when there is a traffic jam or the like.

As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the said embodiment, A various form can be taken within the technical scope of this invention.
For example, in the above embodiment, advice is generated for each of a plurality of diagnosis items (see FIG. 4). However, when it is diagnosed that the same item is not good for a plurality of evaluation sections in succession, The advice may not be generated for a predetermined period for the item.

  Moreover, in the said embodiment, although the driving | running state in an evaluation area is evaluated comprehensively (diagnosis) based on the diagnostic result about each of several diagnostic items (refer FIG. 4), the eco level of FIG. At this time, each diagnosis item may be weighted so that the weight is taken into consideration.

  In the above embodiment, weighting may be performed for each of a plurality of diagnosis items (see FIG. 4), and advice may be notified in descending order of weighting when advice is notified.

  Further, in the driving diagnosis system 1 or the driving advice providing apparatus 10 of the above embodiment, the function of generating and providing the advice may be omitted, and at least the function of performing the driving diagnosis may be provided.

  Moreover, in the said embodiment, you may make it display the average fuel consumption in a predetermined period as fuel consumption information in FIG. Further, the transition of fuel consumption during a predetermined period may be displayed in a graph.

It is a lineblock diagram of driving diagnosis system 1 provided with driving advice offer device 10 of the present invention. 3 is a block diagram illustrating a specific configuration of a driving advice providing device 10. FIG. It is a time chart showing the diagnostic timing of a driving | running state, and the production | generation timing of advice. It is drawing showing the diagnostic content. It is table information showing the relationship between a vehicle speed and the threshold value of an accelerator opening. 3 is a flowchart showing advice generation processing executed in a control circuit 115. It is an example of the display screen which displays the diagnostic result of a driving | running state. It is a time chart showing the provision mode of the advice of a modification.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Driving diagnosis system, 10 ... Driving advice provision apparatus, 101 ... Position detector, 102 ... Geomagnetic sensor, 103 ... Gyroscope, 104 ... Distance sensor, 105 ... GPS receiver, 105a ... GPS antenna, 106 ... Map database, DESCRIPTION OF SYMBOLS 107 ... Operation switch group, 108 ... External memory, 109 ... Display device, 110 ... Voice guidance / voice recognition device, 111 ... BT communication device, 112 ... Remote control sensor, 113 ... Vehicle I / F, 115 ... Control circuit, 120 ... Remote control unit 151... Driving diagnosis information generation unit 153... Diagnosis information comparison unit 155. Advice generation unit 210. Wide area communication device. 220 vehicle speed pulse generator. 230 acceleration sensor 240 fuel amount detection sensor.

Claims (8)

  1. Vehicle information acquisition means for acquiring vehicle information which is information representing the state of the vehicle;
    Based on the vehicle information acquired by the vehicle information acquisition means, diagnostic means for diagnosing the quality of the driving state of the vehicle;
    Advice generating means for generating advice for providing to the driver based on the diagnosis result of the diagnostic means;
    In a driving advice providing device comprising: notification means for notifying a driver of the advice generated by the advice generating means;
    The diagnostic means calculates a driving state of a vehicle in a driving section for each predetermined driving section, calculates a driving state calculated for a diagnosis target driving section (hereinafter referred to as a target driving section), and other driving sections. The driving advice providing apparatus characterized by comparing with the driving state, and diagnosing the quality of the driving state in the target travel section.
  2. In the driving advice device according to claim 1,
    The advice generation means compares the driving state in the target traveling section (hereinafter referred to as the target driving state) with the driving state in the past traveling section (hereinafter referred to as the comparative driving state) from the target traveling section. When the diagnosis means diagnoses that the condition has deteriorated, advice is generated based on the diagnosis result. On the other hand, the diagnosis means diagnoses that the target operation state has deteriorated compared to the comparative operation state. In this case, the advice is not generated when the diagnosis unit diagnoses that the target driving state is better than a predetermined reference state.
  3. In the driving advice providing apparatus according to claim 1 or 2,
    The diagnostic means is adapted to diagnose pass / fail for a plurality of items related to the driving state,
    The advice generating means is adapted to generate advice for each of a plurality of items based on the diagnosis result of the item, while the same item is not good for success or failure for a plurality of running sections continuously. A driving advice providing apparatus characterized in that, when diagnosed by a diagnostic means, advice is not generated for a predetermined period for the item.
  4. In the driving advice providing device according to claim 3,
    Each of the plurality of items is weighted, and the quality of the driving state in the target travel section is configured to be diagnosed based on the result of multiplying the diagnosis result of each of the plurality of items by the weight for each item. Driving advice providing device characterized by that.
  5. In the driving advice providing device according to claim 4,
    The said advice notification means notifies the advice produced | generated about each of these several items in an order from the thing with the largest weighting with respect to an item.
  6. In the driving advice providing device according to any one of claims 1 to 5,
    The advice notifying means is configured to notify an advice when the vehicle is stopped.
  7. In the driving advice providing device according to claim 6,
    The advice generation device is characterized in that the advice generation means generates an advice when the vehicle stops.
  8. Vehicle information acquisition means for acquiring vehicle information which is information representing the state of the vehicle;
    Based on the vehicle information acquired by the vehicle information acquisition means, diagnostic means for diagnosing the quality of the driving state of the vehicle;
    In the driving diagnosis device with
    The diagnostic means calculates a driving state of a vehicle in a driving section for each predetermined driving section, calculates a driving state calculated for a diagnosis target driving section (hereinafter referred to as a target driving section), and other driving sections. A driving diagnosis device characterized in that the driving state is compared with the driving state thus diagnosed to determine whether the driving state in the target travel section is good or bad.
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US12/533,142 US8694200B2 (en) 2008-08-01 2009-07-31 Apparatus and method for advice provision and driving condition diagnosis

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US8694200B2 (en) 2014-04-08
JP2010038646A (en) 2010-02-18

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